WO2009152726A1 - 一种无线链路控制重传处理方法和装置 - Google Patents

一种无线链路控制重传处理方法和装置 Download PDF

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Publication number
WO2009152726A1
WO2009152726A1 PCT/CN2009/072071 CN2009072071W WO2009152726A1 WO 2009152726 A1 WO2009152726 A1 WO 2009152726A1 CN 2009072071 W CN2009072071 W CN 2009072071W WO 2009152726 A1 WO2009152726 A1 WO 2009152726A1
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Prior art keywords
retransmission
radio link
link control
data
rlc
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PCT/CN2009/072071
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English (en)
French (fr)
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孙强
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华为技术有限公司
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Priority to EP09765365A priority Critical patent/EP2293484A1/en
Publication of WO2009152726A1 publication Critical patent/WO2009152726A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1874Buffer management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1835Buffer management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812Hybrid protocols; Hybrid automatic repeat request [HARQ]

Definitions

  • the present application claims the application number of 200810067755. 8 submitted on June 16, 2008. The invention is entitled “A Radio Link Control Retransmission Processing Method and Apparatus” in China Priority of the patent application, the entire contents of which is incorporated herein by reference.
  • TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a radio link control retransmission processing method and apparatus.
  • Background of the Invention Wireless interface technology is a key technology for third generation mobile communications.
  • UMTS Universal Mobi le Telecommunications System
  • the wireless interface protocol structure is shown in Figure 1. It can be divided into physical layer LI (Layer 1), data link layer L2 (Layer 2) and network layer L3 (Layer 3).
  • the data link layer includes a Medium Access Control (MAC) sublayer, a Radio Link Control (RLC) sublayer, and a Packet Data Convergence Protocol (PDCP) sublayer broadcast.
  • MAC Medium Access Control
  • RLC Radio Link Control
  • PDCP Packet Data Convergence Protocol
  • /Broadcast/Multicast Control sublayer where there are three transmission modes of the RLC sublayer: acknowledgment (AM, Acknowledged Mode) mode, non-acknowledgment (UM, Unacknowledged Mode) mode, and transparent (TM, Transparent Mode) mode.
  • AM acknowledgment
  • UM non-acknowledgment
  • TM Transparent Mode
  • a technical problem to be solved by embodiments of the present invention is to provide a radio link control retransmission processing method and apparatus.
  • an embodiment of the present invention provides a radio link control retransmission processing party.
  • the method includes: when the RLC sublayer adopts the acknowledgement transmission mode, the RLC retransmission function on the data link layer L2 is closed.
  • the embodiment of the present invention further provides a radio link control retransmission processing apparatus, including a response mode entity, the response mode entity includes a retransmission buffer and management unit, and an acknowledgment module, configured to confirm that the radio link control RLC sublayer adopts The response transmission mode is used by the control module to disable the RLC retransmission function on the data link layer L2.
  • a radio link control retransmission processing apparatus including a response mode entity, the response mode entity includes a retransmission buffer and management unit, and an acknowledgment module, configured to confirm that the radio link control RLC sublayer adopts
  • the response transmission mode is used by the control module to disable the RLC retransmission function on the data link layer L2.
  • FIG. 1 is a schematic structural diagram of a UMTS radio interface protocol
  • FIG. 2 is a schematic diagram of a response mode entity related to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a response mode entity according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of an RLC sublayer related to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an RLC sublayer according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of a radio link control retransmission processing apparatus according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a radio link control retransmission processing apparatus according to another embodiment of the present invention
  • FIG. 8 is a schematic diagram of a radio link control retransmission processing apparatus according to another embodiment of the present invention. The invention is further illustrated by the examples.
  • WCDMA Wide-band Code Divi- sion Multiple Access
  • the R99/R4 version uses the traditional automatic repeat request (ARQ) method.
  • the retransmission function is implemented in the RLC sublayer. Because signaling and data need to be transmitted between LI, L2, and L3, a large time delay is required for receiving data error retransmission, and L2 needs to handle retransmission related. Signaling, and corresponding caching of the original data, brings a large system overhead.
  • HARQ hybrid automatic retransmission request
  • Hybrid means that it combines the characteristics of Forward Error Correction (FEC) and ARQ, and can be directly controlled by the MAC layer entity (MAC-hs) in L1 retransmission.
  • FEC Forward Error Correction
  • ARQ ARQ
  • MAC-hs MAC layer entity
  • the radio link control retransmission processing method provided by this embodiment includes: when the radio link control sublayer (RLC sublayer) adopts a response transmission mode (AM mode), the RLC retransmission function on the data link layer L2 is disabled. . It should be noted that when the RLC retransmission is abandoned on the L2, the data retransmission can be directly implemented by the HARQ function at the L1 layer. If the quality of the air interface channel is relatively poor, it can also be solved by multiple times of HARQ transmission on L1, specifically The threshold of the number of retransmissions can be set according to the current air interface channel quality.
  • RLC sublayer radio link control sublayer
  • AM mode response transmission mode
  • the threshold of the number of retransmissions can be increased, thereby increasing the number of HARQ transmissions on L1, and further The case where the data HARQ retransmission fails when the air interface channel quality is poor.
  • the unnecessary retransmission data is reserved in the system, and the cache space is occupied unnecessarily.
  • the data retransmission can be completed in L1. Reduces the delay required to receive data error retransmissions.
  • the RLC layer of L2 adopts the acknowledgment AM transmission mode. If the RLC sublayer adopts the AM mode, L2 does not perform any processing on the uplink RLC data response signaling in the signaling processing; in data processing, the RLC data is processed. No caching. It should be noted that both the data response signaling and the RLC data are not buffered, and the RLC retransmission function can be disabled on the data link layer L2. The two measures can be used alone or in combination. At the same time, in order to improve the compatibility with the existing protocol, in the service establishment process, in the AM transmission mode, the uplink and downlink transmission modes can be used. The style is unified into the AM mode.
  • the unnecessary retransmission data is reserved in the system, and the cache space is occupied unnecessarily.
  • the data retransmission can be completed in L1. Reduces the delay required to receive data error retransmissions.
  • the response mode entity model is improved, and the following specifically includes: FIG. 2 is a model of the response mode entity in the existing 3GPP TS 25. 322 protocol, and the improved response mode entity is shown in FIG. 3 .
  • the internal UTRAN side retransmission buffer & management unit of the response mode entity is deleted, and corresponding retransmission information, such as information from the Demux/Routing module, from the Remove RLC header & Extract The information of the Piggybacked information module is not processed.
  • the RLC retransmission function can be disabled on the L2 layer based on the existing protocol.
  • the MUX multiplexing unit is used as an implementation method of the RLC retransmission function, and can be used to multiplex the retransmitted data with the newly transmitted data.
  • the MUX multiplexing unit can also be reserved. Also delete it.
  • the unnecessary retransmission data is reserved in the system, and the cache space is occupied unnecessarily.
  • the data retransmission can be completed in L1. Reduces the delay required to receive data error retransmissions.
  • This embodiment improves the RLC sublayer model in the existing protocol, including:
  • the uplink and downlink data of the RLC sublayer are separated, so that the uplink and downlink data can be transmitted in different modes, so that the RLC sub is closed on the data link layer L2.
  • the implementation may be performed by separating the response mode entities on the UTRAN side and the terminal side in the original RLC sublayer. As shown in FIG. 5, for example, the response mode entity may be divided into a transmission response mode entity (Transm. AM-Entity). And receiving the response mode entity (Receiv. AM-Entity), so that the uplink and downlink data streams of the response mode entity can be separated, thereby separating the uplink and downlink data of the RLC sublayer.
  • the uplink and downlink data transmissions are not bound, and the uplink and downlink logical channels are not associated.
  • the downlink can be transmitted in the UM mode RLC.
  • the RLC transmission of the data does not need to be acknowledged at this time; or, when the uplink uses the UM mode for RLC transmission, the downlink can adopt the AM mode RLC transmission, and at this time, there is no need to respond to the RLC transmission of the uplink data. In this way, the RLC retransmission function can be disabled on the L2 layer based on the existing protocol.
  • the unnecessary retransmission data is reserved in the system, and the cache space is occupied unnecessarily.
  • the data retransmission can be completed in L1. Reduces the delay required to receive data error retransmissions.
  • the embodiment provides a radio link control retransmission processing device.
  • the method includes: a determining module, configured to determine whether a radio link control RLC sublayer adopts a response transmission mode; and a control module, configured to determine The judgment result of the module is that when the radio link control RLC sublayer adopts the acknowledgement transmission mode, the RLC retransmission on the data link layer L2 is closed. At this time, data retransmission can be directly performed at the L1 layer using the HARQ function. A threshold of the number of HARQ retransmissions may be set.
  • the HARQ retransmission on the L1 is increased by increasing the threshold of the number of HARQ transmissions on the L1, thereby solving the failure of the HARQ retransmission of the data when the air interface quality is poor.
  • the retransmission function of the RLC sublayer can be disabled on the downlink data link layer L2 by using the apparatus provided in this embodiment, thereby avoiding unnecessary retransmission of data in the system, occupying cache space unnecessarily, and retransmitting data due to data. It can be completed in L1, which greatly reduces the delay required for receiving data error retransmissions.
  • the embodiment provides a radio link control retransmission processing device, as shown in FIG. 7, including: a determining module, configured to determine whether a radio link control RLC sublayer adopts a response transmission mode; and a control module, configured to determine The result of the module is that when the radio link control RLC sublayer adopts the acknowledgement transmission mode, the RLC retransmission on the data link layer L2 is closed; wherein the control module may include a deletion unit, which is used to delete the retransmission buffer and the management unit in the response mode entity. The deleting unit may further be used to delete the multiplexing module in the response mode entity.
  • the RLC can be disabled on the downlink data link layer L2 by using the apparatus provided in this embodiment.
  • the sub-layer retransmission function avoids the need to retain unnecessary retransmission data in the system, and unnecessarily occupies the buffer space. At the same time, the retransmission of data can be completed in L1, which greatly reduces the error of receiving data when retransmitting. The delay required.
  • the embodiment provides a radio link control retransmission processing device, as shown in FIG. 8, including: a determining module, configured to determine whether a radio link control RLC sublayer adopts a response transmission mode; and a control module, configured to determine The judgment result of the module is that when the radio link control RLC sublayer adopts the acknowledgement transmission mode, the RLC retransmission on the data link layer L2 is closed; the control module may include a separation unit, which is used to control the uplink and downlink of the RLC sublayer of the radio link. The data is separated.
  • the UTRAN side and the terminal side response mode entity in the original RLC sublayer can be divided into a transmission response mode entity (Transm.
  • the separation of the original response mode entities separates the uplink and downlink data streams of the radio link control RLC sublayer.
  • the retransmission function of the RLC sublayer can be closed on the downlink data link layer L2, thereby avoiding unnecessary retransmission of data in the system, occupying the cache space unnecessarily, and at the same time Passed in L1 can be completed, greatly reducing the delay required to receive data error retransmission.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Description

一种无线链路控制重传处理方法和装置 本申请要求了 2008年 6月 16日递交的申请号为 200810067755. 8, 发明 名称为 "一种无线链路控制重传处理方法和装置" 的中国专利申请的优先 权, 其全部内容通过引用结合在本申请中。 技术领域 本发明涉及通信领域, 特别涉及一种无线链路控制重传处理方法和装置 。 背景技术 无线接口技术是第三代移动通信的关键技术。 通用移动通讯*** (UMTS , Universal Mobi le Telecommunications System) 无线接口协议结构如图 1 所 示。可分为物理层 LI (Layer 1 )、数据链路层 L2 (Layer 2 )和网络层 L3 (Layer 3 ) 。 数据链路层包括媒体接入控制 (MAC, Medium Access Control ) 子层、 无 线链路控制(RLC, Radio Link Control )子层、分组数据汇聚协议(PDCP, Packet Data Convergence Protocol )子层禾口广播 /多播控制 (BMC, Broadcast/Multicast Control )子层, 其中, RLC子层的传输模式共有三种: 应答(AM, Acknowledged Mode )模式、非应答(UM, Unacknowledged Mode )模式和透明(TM, Transparent Mode ) 模式。 在 AM传输模式下, 数据在用户 (UE, User Equipment ) 侧 RLC子 层若没有正确接收, 会导致 UE侧 RLC子层发起重传请求。
发明人在实现本发明的过程中发现, 现有的重传机制造成 L2处理复杂, 系 统占用资源较大。 发明内容 本发明实施例所要解决的技术问题在于提供一种无线链路控制重传处理方 法和装置。
为解决上述技术问题, 本发明实施例提供了一种无线链路控制重传处理方 法, 包括: 无线链路控制 RLC子层采用应答传输模式时, 关闭数据链路层 L2上 RLC重传功能。
本发明实施例还提供了一种无线链路控制重传处理装置, 包括应答模式实 体, 应答模式实体包括重传缓冲和管理单元, 还包括确认模块, 用于确认无线 链路控制 RLC子层采用应答传输模式;控制模块,用于关闭数据链路层 L2上 RLC 重传功能。
与现有技术比较可以发现,本发明实施例简化了 HSDPA***中 AM模式下 L2 RLC数据重传功能, 避免 RLC重传功能对资源的占用。 附图说明 图 1为 UMTS无线接口协议结构示意图;
图 2为与本发明实施例相关的应答模式实体示意图;
图 3为本发明实施例提供的应答模式实体示意图;
图 4为与本发明实施例相关的 RLC子层的示意图;
图 5为本发明实施例提供的 RLC子层示意图;
图 6为本发明实施例提供的无线链路控制重传处理装置示意图;
图 7为本发明另一实施例提供的无线链路控制重传处理装置示意图; 图 8为本发明另一实施例提供的无线链路控制重传处理装置示意图; 具体实施方式 下面结合附图并举实施例对本发明作进一步说明。
实施例一
WCDMA (Wide-band Code Divi sion Multiple Access , 宽带码分多址接入 ***) R99/R4 版本中采用了传统的自动重传请求 (ARQ, Automatic Repeat Request )方法, 重传功能在 RLC子层实现, 由于信令和数据需要在 LI、 L2、 L3 之间传递, 接收数据错误重传时需要较大时间延时, 同时 L2需要处理重传相关 信令, 以及对原始数据进行相应的缓存, 带来了较大的***开销, 在 WCDMA R5 及后续的版本中增加了混合自动重传请求 (HARQ, hybrid automatic retransmission request ) 功能, HARQ是一种纠错技术, 混合 (Hybrid) 的意 思是它综合了前向纠错 (FEC, Forward Error Correction) 和 ARQ两种方式的 特点, 可以直接由 MAC层实体 (MAC-hs ) 控制在 L1重传, 从而提高传输速率和 减小时延, 但原有的 L2 的 RLC重传机制仍然被继续保留, 如果 L1重传失败, 则会导致高速下行链路分组接入 (HSDPA, High Speed Downlink Packet Access ) 数据在 UE侧 RLC被确认没有正确接收, 这时会发起 RLC层重传。
本实施例提供的无线链路控制重传处理方法包括: 当无线链路控制子层 (RLC子层) 采用了应答传输模式 (AM模式) 时, 关闭数据链路层 L2上的 RLC 重传功能。 需要指出的是, 当 L2上放弃 RLC重传时, 数据重传可以在 L1层利 用 HARQ功能直接完成, 如果空口信道质量比较差, 还可以通过 L1上的 HARQ多 次传输来解决, 具体来说, 可以设置一个 HARQ重传次数门限, 根据当前空口信 道质量对该重传次数门限进行调整, 当空口信道质量比较差时, 可以提高该重 传次数门限, 从而提高 L1上的 HARQ传输次数, 进而解决空口信道质量差时数 据 HARQ重传失败的情况。 利用本实施例在数据链路层 L2上关闭 RLC子层的重 传功能, 可以避免在***中保留无谓的重传数据、 无谓地占用缓存空间, 同时 由于数据的重传在 L1即可完成, 降低了接收数据错误重传时所需要的时延。
实施例二
本实施例提供的无线链路控制重传处理方法包括:
判断 L2的 RLC层是否采用应答 AM传输模式,如果 RLC子层采用了 AM模式, 在信令的处理上, L2对于上行传递过来 RLC数据应答信令不作任何处理; 在数 据处理上, 对 RLC数据不进行缓存。 需要说明的是, 数据应答信令不作处理与 RLC数据不进行缓存这两种措施都可以实现在数据链路层 L2上关闭 RLC重传功 能, 两种措施既可以单独使用, 也可以结合使用。 同时, 为了提高与现有协议 的兼容性, 在业务建立过程中, 在一方为 AM传输模式下, 可以将上下行传输模 式统一为 AM模式。 利用本实施例在数据链路层 L2上关闭 RLC子层的重传功能, 可以避免在***中保留无谓的重传数据、 无谓地占用缓存空间, 同时由于数据 的重传在 L1即可完成, 降低了接收数据错误重传时所需要的时延。
实施例三
本实施例现有协议中对应答模式实体模型进行了改进, 具体包括: 图 2是现有 3GPP TS 25. 322协议中关于应答模式实体的模型, 改进后的应 答模式实体如图 3所示, 在本实施例中, 将应答模式实体内部 UTRAN侧下行重 传缓冲和管理单元 (Retransmission buffer & management Unit ) 删除, 相应 的重传信息, 例如来自 Demux/Routing模块的信息、 来自 Remove RLC header & Extract Piggybacked information模块的信息等均不做处理。 通过删除重传缓 冲和管理单元并对相应确认信息不作处理, 可以在现有协议的基础上实现在 L2 层上关闭 RLC重传功能。此外, MUX复用单元作为 RLC重传功能的一个实现手段, 可以用来将重传数据与新发数据复用, 在重传缓冲和管理单元删除时, MUX复用 单元也可以不再保留,一并予以删除。利用本实施例在数据链路层 L2上关闭 RLC 子层的重传功能, 可以避免在***中保留无谓的重传数据、 无谓地占用缓存空 间, 同时由于数据的重传在 L1即可完成, 降低了接收数据错误重传时所需要的 时延。
实施例四
本实施例对现有协议中 RLC子层模型进行了改进, 具体包括:
图 4是现有协议中 RLC子层的示意图, 本实施例将 RLC子层的上下行数据 进行分离, 使得上下行数据可以采用不同的模式进行传输, 从而在数据链路层 L2上关闭 RLC子层的重传功能。 具体实现时可以采取将原有 RLC子层中 UTRAN 侧和终端侧的应答模式实体进行分离的方式, 如图 5所示, 例如可以将应答模 式实体分割为传输应答模式实体 (Transm. AM-Entity ) 和接收应答模式实体 (Receiv. AM-Entity) , 这样应答模式实体的上下行数据流即可做到分离, 进而 使得 RLC子层的上下行数据得以分离。 通过使 RLC子层的上下行数据分离, 可 以实现当信道建链的传输模式为 AM模式时, 上下行数据传输不进行绑定, 上下 行逻辑信道没有关联, 当上行 AM模式 RLC传输时, 下行可以采用 UM模式 RLC 传输, 此时对于下行数据的 RLC传输此时无需应答; 或者, 上行采用 UM模式进 行 RLC传输时, 下行可以采用 AM模式的 RLC传输, 此时, 对于上行数据的 RLC 传输无需应答。这样可以在现有协议的基础上实现在 L2层上关闭 RLC重传功能。 利用本实施例在数据链路层 L2上关闭 RLC子层的重传功能, 可以避免在***中 保留无谓的重传数据、 无谓地占用缓存空间, 同时由于数据的重传在 L1即可完 成, 降低了接收数据错误重传时所需要的时延。
实施例五
本实施例提供了一种无线链路控制重传处理装置, 如图 6所示, 包括: 判 断模块, 用于判断无线链路控制 RLC子层是否采用应答传输模式; 控制模块, 用于在判断模块的判断结果为无线链路控制 RLC子层采用应答传输模式时, 关 闭数据链路层 L2上 RLC重传。 此时, 数据重传可以在 L1层利用 HARQ功能直接 完成。 可以采用设置一个 HARQ重传次数门限, 当空口质量比较差时, 通过提高 L1上的 HARQ传输次数门限, 来加大 L1上的 HARQ重传, 从而解决空口信道质量 差时数据 HARQ重传失败的情况。 利用本实施例提供的装置可以在下行数据链路 层 L2上关闭 RLC子层的重传功能, 从而避免了在***中保留无谓的重传数据、 无谓地占用缓存空间, 同时由于数据的重传在 L1即可完成, 极大的降低了接收 数据错误重传时所需要的时延。
实施例六
本实施例提供了一种无线链路控制重传处理装置, 如图 7所示, 包括: 判 断模块, 用于判断无线链路控制 RLC子层是否采用应答传输模式; 控制模块, 用于在判断模块的判断结果为无线链路控制 RLC子层采用应答传输模式时, 关 闭数据链路层 L2上 RLC重传; 其中控制模块可以包括删除单元, 用于删除应答 模式实体中重传缓冲和管理单元, 删除单元还可以进一步用于删除应答模式实 体中的复用模块。利用本实施例提供的装置可以在下行数据链路层 L2上关闭 RLC 子层的重传功能, 从而避免了在***中保留无谓的重传数据、 无谓地占用缓存 空间, 同时由于数据的重传在 L1即可完成, 极大的降低了接收数据错误重传时 所需要的时延。
实施例七
本实施例提供了一种无线链路控制重传处理装置, 如图 8所示, 包括: 判 断模块, 用于判断无线链路控制 RLC子层是否采用应答传输模式; 控制模块, 用于在判断模块的判断结果为无线链路控制 RLC子层采用应答传输模式时, 关 闭数据链路层 L2上 RLC重传; 其控制模块可以包括分离单元, 用于对无线链路 控制 RLC 子层的上下行数据进行分离, 具体实现时可以将原有的 RLC 子层中 UTRAN 侧和终端侧 的应答模式实体分割为传输应答模式实体 (Transm. AM-Entity) 和接收应答模式实体(Receiv. AM_Entity), 通过对原有 应答模式实体的分离, 使对无线链路控制 RLC子层的上下行数据流进行分离。 利用本实施例提供的装置可以在下行数据链路层 L2 上关闭 RLC子层的重传功 會^ 从而避免了在***中保留无谓的重传数据、 无谓地占用缓存空间, 同时由 于数据的重传在 L1即可完成,极大的降低了接收数据错误重传时所需要的时延。
以上实施例仅用以说明本发明的技术方案,而非对本发明作限制性理解。 尽 管参照上述实施例对本发明进行了详细说明, 本领域的普通技术人员应当理解: 其依然可以对本发明的技术方案进行修改或者等同替换, 而这种修改或者等同 替换并不脱离本发明技术方案的精神和范围。

Claims

权 利 要 求 书
1、 一种无线链路控制重传处理方法, 其特征在于, 当无线链路控制子层采 用应答传输模式时, 关闭数据链路层上的无线链路控制重传功能。
2、 如权利要求 1所述的处理方法, 其特征在于, 所述关闭数据链路层上的 无线链路控制重传包括: 所述数据链路层对于上行传递过来的所述线链路控制 数据应答信令不作处理。
3、 如权利要求 1所述的处理方法, 其特征在于, 关闭所述数据链路层上的 无线链路控制重传包括: 所述数据链路层对所述线链路控制数据不进行缓存。
4、 如权利要求 1所述的处理方法, 其特征在于, 所述无线链路控制子层包 含应答模式实体, 所述关闭数据链路层上的无线链路控制重传包括: 将所述应 答模式实体中的重传缓冲和管理单元删除, 重传确认信息不做处理。
5、 如权利要求 4所述的处理方法, 其特征在于, 进一步包括, 将所述应答 模式实体中的复用模块删除。
6、 如权利要求 1所述的处理方法, 其特征在于, 所述关闭数据链路层上的 无线链路控制重传包括: 将所述无线链路控制子层的上下行数据进行分离。
7、 如权利要求 1所述的处理方法, 其特征在于, 将所述无线链路控制重传 在物理层中通过 HARQ完成。
8、 一种无线链路控制重传处理装置, 其特征在于, 包括:
判断模块, 用于判断无线链路控制子层是否采用应答传输模式;
控制模块, 用于在所述判断模块的判断结果为无线链路控制子层采用应答 传输模式时, 关闭数据链路层上无线链路控制重传。
9、 如权利要求 8所述的装置, 其特征在于, 所述控制模块包括删除单元, 用于删除应答模式实体中重传缓冲和管理单元。
10、 如权利要求 8所述的装置, 其特征在于, 所述控制模块包括分离单 元, 用于对所述无线链路控制子层的上下行数据进行分离。
PCT/CN2009/072071 2008-06-16 2009-06-01 一种无线链路控制重传处理方法和装置 WO2009152726A1 (zh)

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